Mathematics, 18.12.2019 05:31 WendigoMeow

Many investors and financial analysts believe the dow jones industrial average (djia) provides a good barometer of the overall stock market. on january 31, 2006, 9 of the 30 stocks making up the djia increased in price (the wall street journal, february 1, 2006). on the basis of this fact, a financial analyst claims we can assume that 30% of the stocks traded on the new york stock exchange (nyse) went up the same day.

1. formulate null and alternative hypotheses to test the analyst's claim.

h0: p
ha: p

2. a sample of 50 stocks traded on the nyse that day showed that 24 went up. what is your point estimate of the population proportion of stocks that went up (to 2 decimals)?

3. conduct your hypothesis test using = .01 as the level of significance.

calculate the value of the test statistic (to 2 decimals).

what is the p-value (to 4 decimals)?

can you conclude that the proportion of stocks going up is not .30?

Answers: 2

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 15:00, jfarley259

Hye ryung is the president of the local chapter of the american medical students association (amsa). she is organizing local outreach and informational meetings. at her first meeting there are five people present (including herself). every month after that her group grows by 5 people. a. how many members are in the group after 6 months? b. the logistics of hosting and feeding her group at meetings was more complicated than expected. the cost of feeding 5 people at her first meeting was $30, for 10 people it was $35, for 15 it was $45, and after 6 months all of the costs had added up to $100. write a function to model the cost with the number of people attending meetings. c. what connections can you make between the linear growth of the group’s membership and the increasing costs of running meetings?

Answers: 3

continue

Mathematics, 21.06.2019 15:40, naomicervero

In what form is the following linear equation written y=9x+2

Answers: 1

continue

Mathematics, 21.06.2019 16:30, mustafajibawi1

A(t)=728(1+0.04)^t how much money did aditya originally invest

Answers: 1

continue

Mathematics, 21.06.2019 18:30, ldldunker

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?